Then it must be something wrong in iRacing. I think you could try to delete joyCalib.yaml from iRacing directory, there might be something wrong in that.
I beleive it was reported before, sometimes the virtual wheel flips the direction of rotation. It happend to me in total three times, one time with version 0.7.1 and two times with 0.8.x. In all cases I was in the Simucube config and saved some changes to the wheel. It’s very seldom and I have not yet found a way to reproduce it. The only way to correct it was to power off/on the wheel.